(Celebratory gunfire) may undergo an explosion.Logical formLearned from15 sentences. A torpedo may undergo an explosion.Logical formLearned from15 sentences. An explosion can be unknown.Logical formLearned from15 sentences. An explosion may rip_apart a block of shops.Logical formLearned from15 sentences. An explosion can be in an office.Logical formLearned from15 sentences. An explosion may rip through a vessel.Logical formLearned from15 sentences. A (gas explosion) can be in a country.Logical formLearned from15 sentences. An explosion can be in a room.Logical formLearned from15 sentences. An explosion may rock a residence.Logical formLearned from15 sentences. A (gas explosion) may be rule_outed.Logical formLearned from15 sentences. An explosion may rock a street.Logical formLearned from15 sentences. Explosions may occur at some a.m..Logical formLearned from15 sentences. Witnesses may speak of an explosion.Logical formLearned from15 sentences. Some persons may die in explosions.Logical formLearned from14 sentences. A (death toll) can be from a (car bomb explosion).Logical formLearned from14 sentences.